The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Feb. 26, 2019

Filed:

Feb. 13, 2017
Applicants:

Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;

Korea Advanced Institute of Science and Technology, Daejeon, KR;

Inventors:

Yun Su Jin, Daejeon, KR;

Gyu Suck Kim, Suwon-si, KR;

Song Cheol Hong, Daejeon, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/217 (2006.01); H03F 1/02 (2006.01); H03F 1/56 (2006.01); H03F 3/193 (2006.01); H03F 1/22 (2006.01);
U.S. Cl.
CPC ...
H03F 1/0288 (2013.01); H03F 1/223 (2013.01); H03F 1/565 (2013.01); H03F 3/193 (2013.01); H03F 3/2171 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01); H03F 2200/72 (2013.01); H03F 2200/75 (2013.01);
Abstract

A power amplifier includes a common source amplifier and a common gate amplifier circuit. The common source amplifier circuit has a terminal connected to a radio frequency (RF) input terminal and uses a source terminal commonly as an input terminal and an output terminal of the power amplifier. The common gate amplifier circuit has a terminal connected to the common source amplifier circuit and another terminal connected to an RF output terminal, and uses a gate terminal commonly as the input terminal and the output terminal of the power amplifier. The common gate amplifier circuit includes a Doherty amplifier including a main power amplifier and an auxiliary power amplifier that is connected to the main power amplifier in parallel.


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